It still freaks me out to see guys on cycles without helmets here in Michigan. I’d never ride without one but so far I haven’t been injured by those who don’t.
When I lived there in the 60s, Mich had a mandatory helmet law but not a mandatory helmet wearing law.
About 75% of the bikes had a helmet strapped to the rear fender.
It still freaks me out to see guys on cycles without helmets here in Michigan.”
Those would be called organ donors.